A pion is a type of subatomic particle.
Pion may also refer to:
People Élisabeth Pion (born 1996), Canadian pianist Marc Pion (born 1996), Canadian lacrosse player Mariana Pion (born 1992), Uruguayan footballer Maurice Pion (1801–1869), French ballet dancer Pio Pion (1887–1965), Italian entrepreneur Richard Pion (born 1965), American hockey player
Places Pión District, in Peru Pion, Asturias, in Villaviciosa, Spain
Other uses 2S7 Pion, self-propelled gun PION Labs, a Brazilian aerospace company Posterior ischemic optic neuropathy Protein pigeon homolog, a protein